Changes

===Example Calculations===

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| style="height:20px; width:200px; text-align:center;" |A bow with a spring constant of 390N/m is stretched 0.52m. Calculate the force applied in the bow correct to two [[Significant Figures|significant figures]].

| style="height:20px; width:200px; text-align:center;" |A bungee cord with a spring constant of 45N/m stretches by 29m. Calculate the [[force]] applied to the cord correct to two [[Significant Figures|significant figures]].

|}

{| class="wikitable"

| style="height:20px; width:200px; text-align:center;" |A car weighing 19000N rests on a single suspension spring. This causes the spring to shorten by 0.15m. Calculate the spring constant of this spring correct to two [[Significant Figure|significant figures]].

| style="height:20px; width:200px; text-align:center;" |A girl of weight 360N balances perfectly on a pogo stick. When she is on the stick it is 13cm shorter than when she steps off. Calculate the spring constant of this spring correct to two [[Significant Figure|significant figures]].